Method of reeling and rolling multiple strip metal



Dec. 29, 1931. B. R. SHOVER 1,838,330

METHOD OF REELING AND ROLLING MULTIPLE STRIP METAL Filed Feb. 3. 192

lNVENTOR Patented Dec. 29, 1931 UNITED STATES PATENT OFFICE BARTON n. snovnn, or PITTSBURGH, rnnnsvnvam mrrnon or nmmmd Ann ROLLING uum'rrrn STRIP mar. ff

Application filed February 3, 192?. Serial No. 165,570.

The invention has to do with the reeling of a pack of strip metal for rolling mill operations, such for example as set forth in my pending patent application Serial No. 137; 330, filed September 23, 1926, which discloses amethod of rolling stri metal whereby strips are first rolled sing y, then arranged in acks either by matching or doubling, or both, and then coiled upon a reel, heated 10 while reeled, and subse uently'passed from the reel through a pair 0 rolls. In reeling a pack of strips of metal which are matched longitudinally as well as'laterally, the outer ends of the completely reeled strips become offset with relation to each other, the outer end of the outermost strip being set backwardly of the outer end of the innermost strip, and the intermediate strips being set back proportionately. This is due to an increase in the circumferential length of a convolution-of an outer strip as compared with the length of the same convolution of any inner strip. jWhen the outer ends of the thus coiled strips'arepartially unreeled for passage between a pair of rolls, the end of the inner strip is first engaged by the rolls, and thereafter the rolls engage successively the ends of the succeeding outer strips before all of the strips become simultaneously engaged. The rolls being set for a certain reduction in the thickness of the entire pack, it follows that the outer ends of the strips are not given the same reduction as those porpassed through the rolls.

This ununiform rolling inner ends of matched and o doubled strips, because, during the unreeling operation, the strips maintain the same relative positions that they occupy when all are first engaged bythe rolls, and accordingly the inner ends the outer strips pass successively through the rolls after the inner end of the inner strip and are not reduced to the same extent as the of this ununiform rolling of both ends of matched strips and of the inner ends of tions of the strips which are simultaneously ap lies alsoto the intermediate portions of the strips. Because- The object of this invention is to provide a method of reeling packs of strip metal whereby the scrap waste at the ends of the strips may be eliminated.

As has been indicated, the invention is ap- 65 plicable to matched, to doubled, and to matched and doubled packs of strip metal, and may be best explained by reference to the accompanying drawings which diagrammatically illustrate it, and in which Fig. 1 is a side view of a pack of laterally matched strips; Fig. 2 a side view of the pack when reeled; Fig. 3 a side view of a doubled strip forming a pack arranged for reeling; Fig. 4 a side view of the doubled strip of F 1g. 3 when reeled; and Fig. 5 a side view of a pair of matched and doubled strips-forming a pack arranged for reelin In the ractice o the invention the inner end of eac outer strip of a pack is ofiset rear- I wardly of a reel such distance as will so compensate for the thickness of the strips that when the pack is reeled the outer ends of the all of the strips or strip sections will be even. This is illustrated in simple form in Fig. 1 which shows two' strips 1 and 2 of equal lengths arranged for coiling upon a reel 3, the end of stri 2, which strip is outermost when the. pack 15 reeled, being ofiset rearwardly from the corresponding or inner end of strip 1. The amount of ofisetting of strip 2 may be .guite accurately determined mathematically or a known diameter of reel core and known length and thickness of strips. When the strips are properly ofiset, their outer ends 35 will be even when the ack is coiled, as illustrated at 4 in Fi 4. once when their outer ends are partially iincoiled for engagement by a gill! of rolls the ends of all of the strips may Followin the principle thus illustrated and explains packs of any desired numbers of strips may have their inner ends ofi'set in 1 .;such amanner that their outer ends will be even, or substantially even, with each other when reeled, or when unreeled to the extent necessary to enter the outer ends of the strip in a roll pass.

In Fig. 3 the invention is illustrated in its applicability to a single doubled strip which simultaneously engaged by the rolls. I

is so doubled that the inner end 5 of the outer section is offset rearwardly of a reel 6, the pack then consisting of two sections of a single strip which in efiect form two strips. When the matched strip is coiled upon the reel 6, its outer end 7 finally folds at a point where the two sections of the strip are of equal lengths, so that when the pack is passed from the reel through a pair of rolls the inner ends 6 and 8 of the strip will pass from the rolls simultaneously.

In F i 5 the invention is illustrated in its applicability to a pair of equal length matched and doubled stri s which in effect form a pack of four strips. he inner end 10 of one strip is offset rearwardly of the inner end of the other stri and the other end 12 of the firstmentione strip is offset rearwardly with relation to the other end 13 of the second-mentioned strip. In this case the end 13 of the second mentioned strip is offset rearwardly of its end 10 an amount equal to the offsets between 10 and 11 and between 12 and13. When reeled the folded ends of the strips will be at such point that the four sections of the two strips will be of equal lengths.

By offsetting packs of strips according to this invention, when they are matched or doubled, or matched and doubled, there is eliminated the waste relatively thick ends consequent upon rolling a reeled pack of strips, which, prior to being reeled, had its ends evenly matched. It is of course unnecessary to' arrange the pack in stack formation before it is reeled, it bein possible to so feed strips to a reel that thelr ends will be ofi'set in the manner explained.

I claim as my invention:

1. In the manufacture of sheet metal, the steps comprising coiling upon a reel a pack of strip metal with the inner end of each outer strip of the pack ofl'set rearwardly a.

thickness-compensatin distance from the inner end of the next a jacent inner strip and with the outer ends of the strips thereby brou ht substantially even, and rolling the reeled pack by entering first its even outer ends in the pass of a rollin mill.

2. In the manufacture 0 sheet metal, the steps comprising coiling upon a reel 9. pack of matched strips of metal of substantially uniform length with the inner end of each outer strip of the pack ofi'set rearwardly a thickness-compensatin distance from the inner end of the next a jacent inner strip and with the outer ends of the strips thereby brought substantially even, and rolling the reeled pack by entering first its even outer ends in the pass of a rolling mill.

In testimony whereof I si 111 BARTON S OVER. 

